All Longines Concas series covers have an EFC-like logo on the back. This is the symbol of Longines product design, and also to commemorate the founder of Longines watch (Ernest Francillon Company, Ernie Francien), so the abbreviation of his name was used.
Simply put, the English abbreviation efc means:
1, which is equivalent to full charge.
2. Earth fixed coordinate fixed coordinate system.
3. Electronic feedback carburetor.
Extended data
Longines was founded in Sofia, Switzerland on 1832. It has a long history and exquisite craftsmanship of 180 years, and also has outstanding traditions and outstanding experience in the field of sports timing. Longines watches marked by flying wings and hourglasses are famous for their elegance. Longines watch, as a famous brand of Swatch Group, the world's leading watch manufacturer, has spread all over the world 150 countries.
Development history
1832, August Agassiz &; amp； Working in a small watch shop in a small village in San Lemire. Soon, he took over the whole store and renamed it "Agassiz &; Company. Twenty years later, Agassiz's nephew Ernest Francielen inherited his business.
Francillon is far-sighted. His idea is to concentrate all the mechanical production and assembly steps of clocks and watches in the same factory building and establish a set of perfect production procedures. So I bought two pieces of land adjacent to the right bank of the Suze River, which was locally called Les Longines.
1867, Francillon established the first longines watch factory, produced the first pocket watch controlled by keys, and won the bronze medal in the global exhibition in Paris, France. The first Longines watch was born.
On May 1880, Longines Watch officially became a registered trademark in Switzerland, which is the oldest trademark in the Swiss watchmaking industry.
1969 once again took the lead in producing the world's first quartz watch. Another achievement of Longines watch is that it makes use of the characteristics of timely vibration to produce word skipping display, becoming the first timer with liquid crystal display.
1889 At 4: 00 pm on May 27th, Longines Watch's flying wing hourglass trademark was officially registered in Bourne's Product Intellectual Property Office with the patent number of 2684. Since then, the flying wing hourglass has become a prominent image of Longines.
1904, the Longines Express monarch was praised by an American Antarctic expedition. During the 429-day journey, Longines' timepieces can keep a difference of only 4 seconds with amazing accuracy. At 19 12, Longines chronograph correctly calculated the speed for 3,500 athletes, which once again became a commendable goal.
In view of the extremely high precision of the timepieces produced by Longines Watch Factory, it has made great contributions to navigation research and was awarded the advanced certificate as proof. Then in 1964, Longines won the first prize of the Observatory with the world's smallest electronic navigation timepiece.
1938, Longines made the second navigation watch Siderograph. 1945, the L22A movement was born, symbolizing the birth of Longines' first fully automatic men's movement.
Longines Circle was promoted in 1950. In 1953, Longines Watch launched a series of innovative publicity activities, named Longines Circle.
1979, Longines introduced the thinnest watch in the world at that time, with a body thickness of less than 2mm.
1982, Longines launched Agassiz ultra-thin gold watch series to commemorate Longines150th anniversary. This series of watches is only 3 mm thick and has waterproof function. Later, in 1983, Longines introduced the L 961"Baguette" fine movement specially designed for women's watches, with a thickness of only1.75 mm. ..
1984, Longines introduced the conquest watch with extremely high precision movement, which is a great development of Longines watch. Due to the addition of thermal compensation system, this series of watches is 5 to 10 times more accurate than ordinary watches. These inventions have laid a prominent position in the creative concept and watchmaking technology of Longines watches.
Concas series
Longines Concas series is the essence of Longines elegance. The unique aesthetic bezel, convex crown and links are all made of ceramic materials, which are exquisite and unique. This exquisite material perfectly combines lasting charm with innovative technology.
Longines Concas series is made of fine steel and ceramics, which perfectly embodies the unparalleled combination of powerful functions and elegant temperament, and its excellent technical characteristics can meet the requirements of the most critical athletes. Whether in the most fashionable night party or in the distinguished racing stands, this solemn and exquisite watch will definitely shine.
Longines' new Conquest ladies' diamond watch is available in black and white, which skillfully combines jewelry with hard ceramics. These new watches are beyond compare. They are not only sporty in design, but also inlaid with sparkling diamonds. They are a combination of performance and elegance. Women who are well-dressed and love sports will definitely feel that they are treasures.
Longines Conquest ladies' diamond watches perfectly combine sparkling diamonds with rock-solid ceramics, thus becoming the embodiment of brand elegance and leisure. Round stainless steel case with black ceramic bezel of 54 diamonds. This watch is equipped with a chronograph movement (L263.2), which can display hours, minutes and dates.
Its black dial has a diamond scale of 1 1 and a date window at three o'clock. Conquest women's diamond watch is equipped with a stainless steel strap with black ceramic connection and a screw-in case bottom cover, which is waterproof to 5 atmospheres (50 meters or 5 atmospheres).
Another white ceramic bezel is set with 54 diamonds. This watch is also equipped with L263.2 chronograph movement, which can display hours, minutes, seconds and dates. The white mother-of-pearl dial has 1 1 diamond, and there is a date window at three o'clock. Conquest women's diamond watch is equipped with stainless steel strap, also connected with white ceramics, and the screw-in case bottom cover is waterproof for 50 meters.
Concas diving series
Profound beauty of sports "outstanding" diving watch. Concas diving series watches are designed for men who are committed to conquering the ocean and are passionate about it. This series of diving watches meet all the strict requirements in diving field: ensuring the waterproof function to reach the water pressure equivalent to 300 meters (30atm), assembling unidirectional rotating bezel, screw-in case and crown, crown side cover, double safety folding buckle and integrated diving extension device.
Absolute safety and strict guarantee are your excellent companions in the deep-sea underwater world. Excellent performance and elegant bearing have created a unique Longines watch combination.
Baidu Encyclopedia (Longines Watch)